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Finding the Fourth Proportional to 535,989,817.20, 803,984,725.80 and 263,892,025.20

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Solution

The fourth proportional to 535,989,817.20, 803,984,725.80 and 263,892,025.20 is: 395,838,037.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,989,817.20 : 803,984,725.80 = 263,892,025.20 : x
  2. Step 2: Convert to fraction form
    535,989,817.20/803,984,725.80 = 263,892,025.20/x
  3. Step 3: Cross multiply
    535,989,817.20x = 803,984,725.80 × 263,892,025.20
  4. Step 4: Simplify right side
    535,989,817.20x = 212,165,157,521,228,672
  5. Step 5: Solve for x
    x = 212,165,157,521,228,672/535,989,817.20
  6. Step 6: Final answer
    x = 395,838,037.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.